CN113963847A - Release force anti-torsion aluminum alloy composite cable - Google Patents
Release force anti-torsion aluminum alloy composite cable Download PDFInfo
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- CN113963847A CN113963847A CN202111050617.0A CN202111050617A CN113963847A CN 113963847 A CN113963847 A CN 113963847A CN 202111050617 A CN202111050617 A CN 202111050617A CN 113963847 A CN113963847 A CN 113963847A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 92
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 239000010410 layer Substances 0.000 claims abstract description 80
- 230000003578 releasing effect Effects 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims abstract description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011241 protective layer Substances 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000011229 interlayer Substances 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000012781 shape memory material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Ropes Or Cables (AREA)
- Non-Insulated Conductors (AREA)
Abstract
The invention relates to a force-releasing anti-torsion aluminum alloy composite cable, and belongs to the technical field of power cables. The outer surface of the aluminum alloy wire core is provided with a tensile structure layer, and the interior of the aluminum alloy wire core is provided with a tensile metal wire; the outer side of the tensile structure layer is filled with an isolation filler, a composite layer is arranged outside the isolation filler, and the composite layer sequentially comprises a rubber protective layer, a phenolic foam layer and a strong interlayer from outside to inside; the tensile structure layer comprises an adapter ring I, an adapter ring II and an anti-torsion rib arranged between the adapter ring I and the adapter ring II; the torsion-resistant ribs are arranged in a wave shape; the connecting ring I and the connecting ring II are both arranged in an annular shape, and two ends of at least three torsion-resistant ribs are surrounded on the circumferences of the connecting ring I and the connecting ring II; and a plurality of tensile structure layers are arranged at intervals along the radial direction of the aluminum alloy wire core. The invention creatively applies the tensile structure layer to the interior of the cable, and redesigns and researches the aluminum alloy which is easy to generate torsional deformation.
Description
Technical Field
The invention relates to a force-releasing anti-torsion aluminum alloy composite cable, and belongs to the technical field of power cables.
Background
The aluminum alloy power cable is a novel material power cable which takes AA8030 series aluminum alloy materials as conductors and adopts advanced technologies such as a special roll-forming wire stranding production process and annealing treatment. The weight of an aluminum alloy cable is about half that of a copper cable at the same ampacity. Meanwhile, the bending property, the creep resistance, the corrosion resistance and the like are greatly improved. Chinese patent cn201920978799.x discloses a cable for photoelectric composite coal mining machine, wherein a transmission conductor is formed by twisting aluminum alloy wires in the same direction, the cable is different from a common multilayer armor structure and has the characteristics of flexibility and bending resistance, but the aluminum alloy structure is only suitable for occasions with two or a few cables, and once the number of cables is large, the anti-torsion effect of the cable is greatly reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a strength-releasing and torsion-resisting aluminum alloy composite cable.
According to the aluminum alloy composite cable with the releasing force and the twisting resistance, the tensile structure layer is arranged on the outer surface of the aluminum alloy wire core, and the tensile metal wire is arranged inside the aluminum alloy wire core; the outer side of the tensile structure layer is filled with an isolation filler, a composite layer is arranged outside the isolation filler, and the composite layer sequentially comprises a rubber protective layer, a phenolic foam layer and a strong interlayer from outside to inside; the tensile structure layer comprises an adapter ring I, an adapter ring II and an anti-torsion rib arranged between the adapter ring I and the adapter ring II; the anti-torsion ribs are arranged in a wavy manner, and at least one downward bulge of the anti-torsion ribs acts on the surface of the aluminum alloy wire core contacted with the anti-torsion ribs; the connecting ring I and the connecting ring II are both arranged in an annular shape, and two ends of at least three torsion-resistant ribs are surrounded on the circumferences of the connecting ring I and the connecting ring II; and a plurality of tensile structure layers are arranged at intervals along the radial direction of the aluminum alloy wire core.
Firstly, the outermost part of the aluminum alloy wire core is added with a composite layer. The composite layer is intended to improve bending resistance, creep resistance and corrosion resistance. Secondly, the aluminum alloy wire core is improved, the tensile structure layer is arranged at intervals, and the restoring force of the tensile structure layer is utilized to provide anti-torsion force for the aluminum alloy wire core, so that the force-releasing anti-torsion effect is formed. Finally, the tensile metal wire is arranged inside the aluminum alloy wire core, and the aluminum alloy wire core does not have the anti-torsion effect and mainly has the tensile effect. Two-stage torsion resistance is formed on the whole cable, and one-stage torsion resistance is formed on the composite layer, belonging to the category of coarse adjustment; the tensile structure layer forms a secondary torsion resistance, and belongs to the fine adjustment category.
Preferably, the aluminum alloy wire core is formed by gathering a plurality of bundles of aluminum alloy cables, and the aluminum alloy wire core is formed by tightly stacking the aluminum alloy cables by taking the tensile metal wires as axes.
The aluminum alloy wire core is formed by combining a multi-strand cable instead of a hollow single cable, so that the fault-tolerant probability is increased. The aluminum alloy cable formed by stacking layers has a certain torsion-resistant effect, and the tensile metal wire arranged in the aluminum alloy cable has certain torsion-resistant and tensile-resistant effects.
Preferably, the connecting ring I and the connecting ring II are respectively fixed on two parts of the aluminum alloy wire core, and are twisted under the action of external force, the anti-torsion ribs between the two parts are simultaneously twisted, and the wavy shape is stretched; after the external force is released, the torsion-resistant rib generates restoring force on the connecting rings I and II at the two ends of the torsion-resistant rib, so that the aluminum alloy wire core confined on the inner surface of the torsion-resistant rib is forced to reset.
The entire tensile structural layer is the core of this application. The fine adjustment effect is achieved on the aluminum alloy wire core. Especially, under the condition that the cable is subjected to short-time acting force, the tensile force releasing effect is remarkable. The principle is that the left and the right connecting rings are fixed and the anti-torsion rib between the left and the right connecting rings is reset. Simultaneously, improve the shape of antitorque commentaries on classics muscle, utilize the wave, its wave below takes place to contact with the cable on the one hand, increases frictional force, and on the other hand it possesses certain ductility, takes place the wrench movement along with the cable is synchronous easily.
Preferably, the torsion resistant rib is made of an alloy with memory restoring force.
The alloy having a memory restoring force is a material having the best shape memory characteristics among shape memory materials at the present stage. Another key characteristic of shape memory alloys is their pseudo-ductility (also known as super-ductility), which is primarily characterized by higher deformation recovery force than that of typical metallic materials under the action of external forces, i.e., the large strain forces caused during the entire loading process can be repaired with unloading.
Preferably, the anti-torsion rib is sunken in the position of being in contact with the aluminum alloy cable, and because the intensity of aluminum alloy cable is weaker than the intensity of anti-torsion rib, therefore sunken to the aluminum alloy cable take place, the outermost cladding of aluminum alloy cable has the voltage resistance layer.
The outermost layer of aluminum alloy cable installs the resistance to pressure layer, and the fixed surface of resistance to pressure layer installs the wearing layer, through the effect of resistance to pressure layer, wearing layer, can improve the withstand voltage of aluminum alloy cable, wear resistance, extension durability.
Preferably, a squeezing force exists between the pressure-resistant layer and the anti-torsion rib, the anti-torsion rib is twisted under the action of an external force, and the pressure-resistant layer and the anti-torsion rib form a friction pair.
The friction pair can offset partial external force on one hand, and on the other hand, the pressure-resistant layer is in closer contact with the torsion-resistant rib, so that the torsion degree is reduced, and the force-releasing torsion resistance is facilitated.
The invention has the beneficial effects that: according to the strength-releasing and torsion-resisting aluminum alloy composite cable, the internal and external structures of the aluminum alloy wire core are optimized, the composite layer is added outside the aluminum alloy wire core, and the torsion resistance is improved; tensile wires are added inside the steel wire, so that the tensile property is improved; the tensile structure layer is creatively applied to the interior of the cable, and redesign and research are carried out on the aluminum alloy which is easy to generate torsional deformation; the bearing base point is used for taking the advanced shape memory alloy as an anti-torsion rib and assisting a left connecting ring and a right connecting ring to be used for restoring force; the multi-stage and multi-layer improvement from inside to outside on the cable structure, the inner and outer layers and the radial layer are provided, the combination is considered, and the torsion force releasing effect is improved.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a schematic structural view of a tensile structure layer.
In the figure: 1. a rubber protective layer; 2. a phenolic foam layer; 3. a strong interlayer; 4. a tensile structural layer; 41. an adaptor ring I; 42. torsion-resistant ribs; 43. an adaptor ring II; 5. a pressure-resistant layer; 6. an aluminum alloy wire core; 7. and (4) tensile metal wires.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 and fig. 2, in the strength-releasing and torsion-resisting aluminum alloy composite cable of the present invention, a tensile structure layer 4 is disposed on the outer surface of an aluminum alloy wire core 6, and a tensile wire 7 is disposed inside the aluminum alloy wire core 6; the outside of tensile structural layer 4 is filled with keeps apart the filler, keeps apart the filler outside and is provided with the composite bed, and the composite bed includes rubber protective layer 1, phenolic foam layer 2 and strong interlayer 3 in proper order from outside to inside.
As shown in fig. 3, the tensile structure layer 4 includes a connection ring i 41, a connection ring ii 43, and an anti-torsion rib 42 disposed between the connection ring i 41 and the connection ring ii 43; the anti-torsion ribs 42 are arranged in a wavy manner, and at least one downward bulge of the anti-torsion ribs acts on the surface of the aluminum alloy wire core 6 contacted with the anti-torsion ribs; the connecting ring I41 and the connecting ring II 43 are both arranged in an annular shape, and two ends of at least three anti-torsion ribs 42 are encircled on the circumferences of the connecting ring I41 and the connecting ring II 43; and a plurality of tensile structure layers 4 are arranged at intervals along the radial direction of the aluminum alloy wire core 6.
Firstly, the outermost part of the aluminum alloy wire core 6 is added with a composite layer. The composite layer is intended to improve bending resistance, creep resistance and corrosion resistance. Secondly, improve at aluminum alloy sinle silk 6 self, install tensile structural layer 4 at every a distance, utilize the restoring force of tensile structural layer 4 to provide anti torsion power for aluminum alloy sinle silk 6 to form the anti torsion effect of power release. Finally, the tensile metal wire 7 is arranged inside the aluminum alloy wire core 6, and the aluminum alloy wire core does not have the torsion resistance effect and mainly has the tensile effect. Two-stage torsion resistance is formed on the whole cable, and one-stage torsion resistance is formed on the composite layer, belonging to the category of coarse adjustment; the tensile structure layer 4 forms a secondary torsion resistance, and belongs to the fine adjustment category.
Preferably, the aluminum alloy wire core 6 is formed by gathering a plurality of bundles of aluminum alloy cables, which are tightly stacked with the tensile wires 7 as an axis, which is not shown in fig. 1.
The aluminum alloy wire core 6 is formed by combining a multi-strand cable instead of a hollow single cable, so that the fault-tolerant probability is increased. The aluminum alloy cable formed by stacking layers has certain torsion-resistant effect, and the tensile metal wire 7 arranged in the aluminum alloy cable has certain torsion-resistant and tensile-resistant effects.
Preferably, as shown in fig. 3, the connecting ring i 41 and the connecting ring ii 43 are respectively fastened to two parts of the aluminum alloy wire core 6, and are twisted under the action of external force, the torsion-resistant rib 42 between the two parts is simultaneously twisted, and the wavy shape is stretched; after the external force is released, the torsion-resistant rib 42 generates restoring force to the connecting rings I41 and II 43 at the two ends of the torsion-resistant rib, so that the aluminum alloy wire core 6 confined on the inner surface of the torsion-resistant rib is forced to reset.
The entire tensile structure layer 4 belongs to the core of the present application. The fine adjustment effect is achieved on the aluminum alloy wire core 6. Especially, under the condition that the cable is subjected to short-time acting force, the tensile force releasing effect is remarkable. The principle is that the left and the right connecting rings are fixed and the anti-torsion rib 42 between the left and the right connecting rings is used for resetting. Meanwhile, the shape of the anti-torsion rib 42 is improved, and the wave shape is utilized, so that the wave-shaped lower part of the anti-torsion rib is in contact with the cable to increase friction force, and the anti-torsion rib has certain ductility and is easy to twist synchronously along with the cable.
Preferably, the torsion resistant rib 42 is made of an alloy having a memory restoring force.
The alloy having a memory restoring force is a material having the best shape memory characteristics among shape memory materials at the present stage. Another key characteristic of shape memory alloys is their pseudo-ductility, also known as super-ductility, which is characterized by a higher deformation recovery force than that of a typical metal material under the action of an external force, i.e., the large strain force caused during the entire loading process is repaired with the unloading.
Preferably, there is a recess in the anti-twist rib 42 and the aluminum alloy cable contact position, because the intensity of aluminum alloy cable is weaker than the intensity of anti-twist rib 42, therefore sunken to the aluminum alloy cable emergence, the outermost cladding of aluminum alloy cable has the voltage resistance 5.
The outermost layer of aluminum alloy cable installs resistance to pressure 5, and the fixed surface of resistance to pressure 5 installs the wearing layer, through the effect of resistance to pressure 5, wearing layer, can improve the withstand voltage of aluminum alloy cable, wear resistance, extension durability.
Preferably, a squeezing force exists between the pressure-resistant layer 5 and the anti-torsion rib 42, the anti-torsion rib 42 is twisted under the action of an external force, and the pressure-resistant layer 5 and the anti-torsion rib 42 form a friction pair.
The friction pair can offset part of external force on one hand, and on the other hand, the pressure-resistant layer 5 is more tightly contacted with the torsion-resistant rib 42, so that the torsion degree is reduced, and the force releasing and torsion resistance are facilitated.
The invention has the beneficial effects that: according to the strength-releasing and torsion-resisting aluminum alloy composite cable, the internal and external structures of the aluminum alloy wire core 6 are optimized, and the composite layer is added outside the aluminum alloy wire core, so that the torsion resistance is improved; tensile wires 7 are added inside to improve tensile property; the tensile structure layer 4 is creatively applied to the interior of the cable, and redesign and research are carried out on the aluminum alloy which is easy to generate torsional deformation; the bearing base points for the restoring force are formed by taking the advanced shape memory alloy as an anti-torsion rib 42 and assisting two left and right connecting rings; the multi-stage and multi-layer improvement from inside to outside on the cable structure, the inner and outer layers and the radial layer are provided, the combination is considered, and the torsion force releasing effect is improved.
It should be noted that: the rubber protective layer 1, the phenolic foam layer 2 and the strong interlayer 3 contained in the composite layer are all arranged conventionally, and belong to primary anti-torsion arrangement for the outer part of the aluminum alloy wire core 6;
isolation packing between tensile structural layer 4 and the composite bed belongs to cotton yarn filler and scribbles fire retardant and waterproofing agent, and inside has imbedded one deck wire mesh, can prevent external factor to the interference of transmission signal, can prevent internal factor again to signal transmission's interference, and production simple process, the cost is lower moreover, and intensity is good.
The invention can be widely applied to power cable occasions.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050617.0A CN113963847B (en) | 2021-09-08 | 2021-09-08 | Release force torsion-resistant aluminum alloy composite cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050617.0A CN113963847B (en) | 2021-09-08 | 2021-09-08 | Release force torsion-resistant aluminum alloy composite cable |
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| CN113963847A true CN113963847A (en) | 2022-01-21 |
| CN113963847B CN113963847B (en) | 2022-09-30 |
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| CN213123885U (en) * | 2020-10-28 | 2021-05-04 | 安徽海源特种电缆有限公司 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant instrument cable |
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2021
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| Publication number | Publication date |
|---|---|
| CN113963847B (en) | 2022-09-30 |
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